The dbe_index of a given database item might change in the future, so we
can't rely on it everywhere. Let's just use it for saving and loading
files, with the expectation that changes will happen sometime after
startup.
Implements #69: Reduce use of dbe_index in Ocarina code
Signed-off-by: Anna Schumaker <Anna@NoWheyCreamery.com>
Albums tend to have a single genre for all tracks, so it makes more
sense for an album to point to genre information.
Signed-off-by: Anna Schumaker <Anna@NoWheyCreamery.com>
I was storing database indexes, but this assumes that database indexes
are constant. I intend to change this with database defragmentation.
Implements #46: Filter stores a track pointer
Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>
This is used to remove tracks from the filtering index. We'll need this
once we switch over to storing pointers to keep the same track from
getting added multiple times.
Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>
This function returns the average count of tracks that have been played,
and not the average count of all tracks.
Implements #29: Efficiently calculate average play count of tracks
Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>
Load all tag databases with the new load function.
Implements #15: Load track database through an idle task
Implements #16: Load library database through an idle task
Implements #17: Load genre database through an idle task
Implements #18: Load artist database through an idle task
Implements #19: Load album database through an idle task
Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>